/***************************************************************************/
/*                                                                         */
/*  ftmm.c                                                                 */
/*                                                                         */
/*    Multiple Master font support (body).                                 */
/*                                                                         */
/*  Copyright 1996-2001, 2003, 2004, 2009 by                               */
/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
/*                                                                         */
/*  This file is part of the FreeType project, and may only be used,       */
/*  modified, and distributed under the terms of the FreeType project      */
/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
/*  this file you indicate that you have read the license and              */
/*  understand and accept it fully.                                        */
/*                                                                         */
/***************************************************************************/


#include <ft2build.h>
#include FT_MULTIPLE_MASTERS_H
#include FT_INTERNAL_OBJECTS_H
#include FT_SERVICE_MULTIPLE_MASTERS_H


/*************************************************************************/
/*                                                                       */
/* The macro FT_COMPONENT is used in trace mode.  It is an implicit      */
/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log  */
/* messages during execution.                                            */
/*                                                                       */
#undef  FT_COMPONENT
#define FT_COMPONENT trace_mm


static FT_Error
ft_face_get_mm_service(FT_Face face,
                       FT_Service_MultiMasters* aservice)
{
    FT_Error error;


    *aservice = NULL;

    if (!face)
        return FT_Err_Invalid_Face_Handle;

    error = FT_Err_Invalid_Argument;

    if (FT_HAS_MULTIPLE_MASTERS(face))
    {
        FT_FACE_LOOKUP_SERVICE(face,
                               *aservice,
                               MULTI_MASTERS);

        if (*aservice)
            error = FT_Err_Ok;
    }

    return error;
}


/* documentation is in ftmm.h */

FT_EXPORT_DEF(FT_Error)
FT_Get_Multi_Master(FT_Face face,
                    FT_Multi_Master * amaster)
{
    FT_Error error;
    FT_Service_MultiMasters service;


    error = ft_face_get_mm_service(face, &service);
    if (!error)
    {
        error = FT_Err_Invalid_Argument;
        if (service->get_mm)
            error = service->get_mm(face, amaster);
    }

    return error;
}


/* documentation is in ftmm.h */

FT_EXPORT_DEF(FT_Error)
FT_Get_MM_Var(FT_Face face,
              FT_MM_Var * *amaster)
{
    FT_Error error;
    FT_Service_MultiMasters service;


    error = ft_face_get_mm_service(face, &service);
    if (!error)
    {
        error = FT_Err_Invalid_Argument;
        if (service->get_mm_var)
            error = service->get_mm_var(face, amaster);
    }

    return error;
}


/* documentation is in ftmm.h */

FT_EXPORT_DEF(FT_Error)
FT_Set_MM_Design_Coordinates(FT_Face face,
                             FT_UInt num_coords,
                             FT_Long * coords)
{
    FT_Error error;
    FT_Service_MultiMasters service;


    error = ft_face_get_mm_service(face, &service);
    if (!error)
    {
        error = FT_Err_Invalid_Argument;
        if (service->set_mm_design)
            error = service->set_mm_design(face, num_coords, coords);
    }

    return error;
}


/* documentation is in ftmm.h */

FT_EXPORT_DEF(FT_Error)
FT_Set_Var_Design_Coordinates(FT_Face face,
                              FT_UInt num_coords,
                              FT_Fixed * coords)
{
    FT_Error error;
    FT_Service_MultiMasters service;


    error = ft_face_get_mm_service(face, &service);
    if (!error)
    {
        error = FT_Err_Invalid_Argument;
        if (service->set_var_design)
            error = service->set_var_design(face, num_coords, coords);
    }

    return error;
}


/* documentation is in ftmm.h */

FT_EXPORT_DEF(FT_Error)
FT_Set_MM_Blend_Coordinates(FT_Face face,
                            FT_UInt num_coords,
                            FT_Fixed * coords)
{
    FT_Error error;
    FT_Service_MultiMasters service;


    error = ft_face_get_mm_service(face, &service);
    if (!error)
    {
        error = FT_Err_Invalid_Argument;
        if (service->set_mm_blend)
            error = service->set_mm_blend(face, num_coords, coords);
    }

    return error;
}


/* documentation is in ftmm.h */

/* This is exactly the same as the previous function.  It exists for */
/* orthogonality.                                                    */

FT_EXPORT_DEF(FT_Error)
FT_Set_Var_Blend_Coordinates(FT_Face face,
                             FT_UInt num_coords,
                             FT_Fixed * coords)
{
    FT_Error error;
    FT_Service_MultiMasters service;


    error = ft_face_get_mm_service(face, &service);
    if (!error)
    {
        error = FT_Err_Invalid_Argument;
        if (service->set_mm_blend)
            error = service->set_mm_blend(face, num_coords, coords);
    }

    return error;
}


/* END */